Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition
Engine management Model: 80 1,612,O 1001A6 2,O Year: 1991 -07192 Engine code: ME, ABM, ABT System: Bosch Mono-Motronic MA1.2.1 80 - in underbonnet fuseboxlrelay plate 100lA6 - in underbonnet relay plate NOTE: 35 pin ECM multi-plug. General information Refer to the front of this manual for general test conditions, terminology, detailed descriptions of wiring faults and a general trouble shooter for electrical and mechanical faults. Trouble codes are displayed by using an LED connected to the data link connector (DLC). n The ECM fault memory can also be checked and erased using diagnostic equipment connected to the data link connector (DLC). Self-diagnosis using flash type trouble codes may not display all available diagnostic information. Carry out road test for 10 minutes. Accessing Ensure ignition switched OFF. Bridge black data link connector (DLC) terminal 1 H [A] and brown or white data link connector (DLC) terminal 1 H [B] with a switched lead - contacts normally open. Connect LED test lamp between black data link connector (DLC) terminal 2 [A] and ECM terminal 33. 80: ECM located behind passenger's glovebox. 100: ECM located in plenum chamber. NOTE: DO NOT disconnect ECM multi-plug as this will erase fault memory. Start engine. Allow to idle. NOTE: If engine does not start: Crank engine for 6 seconds. Leave ignition switched ON. Operate switch for 4 seconds. Release switch. Check that LED flashes. Count LED flashes. Note trouble code. Each trouble code consists of four groups of one to four flashes. A 2,5 second pause separates each trouble code group [A]. Repeat switch operation. Note trouble codes. Compare with trouble code table. End of test sequence indicated by trouble code 0000 (long flashes). Switch ignition OFF. Rectify faults as necessary.
Model. 80 1,612,O 1001A6 2,O Engine management Erasing Method 1 Ensure ignition switched OFF. Bridge black data link connector (DLC) terminal 1 [A] and brown or white data link connector (DLC) terminal 1 [B] with a switched lead - contacts normally open. Operate switch and hold. Switch ignition ON. Release switch after 5 seconds. Repeat checking procedure to ensure no data remains in ECM fault memory. Method 2 Ensure ignition switched OFF. Disconnect ECM multi-plug or battery earth lead. NOTE: ECM adaptive memory may be erased causing erratic running faults. Carry out road test to allow ECM to re-learn basic values. WARNING: Disconnecting the battery may erase memory from electronic units (e.g. radio, clock). Trouble code identification type 4-digit 0000 Fault location End of test sequence 1111 ( Engine control module (ECM) I ECM 1231 I Vehicle speed sensor (VSS) ( Wiring, speedometer, VSS 1232 2113 Idle speed control (ISC) actuator Crankshaft position (CKP) sensor I Closed throttle position (CTP) switch Probable cause - Wiring, multi-plug incorrectly wired, ISC actuator Insecure rotor, wiring, CKP sensor Accelerator cable adjustment, CTP switch adjustment, wiring, CTP switch 221 2 I Throttle position (TP) sensor I Wiring, poor connection, TP sensor 2234 2312 Engine control module (ECM) - supply voltage Engine coolant temperature (ECT) sensor Battery, wiring 2322 I Intake air temperature (IAT) sensor I Wiring, IAT sensor Wiring, poor connection, ECT sensor 2341 rn 1 Heated oxygen sensor (H02S) - lambda control Heating inoperative, exhaust leak, misfire, fuel pressurelpump, EVAP canister purge valve 2342 2413 fl 4444 Heated oxygen sensor (H02S) Mixture control (MC) No fault found - Wiring, H02S, heating inoperative, fuel level low Fuel level low, fuel pressurelpump, intakelexhaust leak, misfire, HOZS, EVAP canister purge valve, injector, excessive fuel in engine oil rn Trouble code may be displayed if engine is not idling during self-diagnosis due to missing CKP sensor signal. Ignore trouble code if engine starts. After repairs, erase learnt lambda control values: Wait 30 seconds. Disconnect battery or ECM multi-plug for at least 30 seconds. Carry out road test to allow ECM to re-learn basic values.
- Page 79 and 80: EOBD trouble code table code PO630
- Page 81 and 82: EOBD trouble code table PO700 PO701
- Page 83 and 84: EOBD trouble code table Trouble cod
- Page 85 and 86: EOBD trouble code table PO838 PO839
- Page 87 and 88: EOBD trouble code table ( code TrOu
- Page 89 and 90: EOBD trouble code table PO948 PO949
- Page 91 and 92: Model: 1451146 1,411,611,812,O 1451
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- Page 135 and 136: I Model: 80 1,9 TDI (-06193) 100 2,
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- Page 143 and 144: Engine management type 4-digit Faul
- Page 145 and 146: Engine management type 5-digit Faul
- Page 147 and 148: Model: A3 80 A4 100lA6 A61Allroad A
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- Page 155 and 156: Model: A2 A363 80 (08194 +) A41S4 A
- Page 157 and 158: Model: 316ilCompact, 318iliSICoupel
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Model. 80 1,612,O 1001A6 2,O<br />
Engine management<br />
Erasing<br />
Method 1<br />
Ensure ignition switched OFF.<br />
Bridge black data link connector (DLC) terminal 1 [A] <strong>and</strong><br />
brown or white data link connector (DLC) terminal 1 [B] with<br />
a switched lead - contacts normally open.<br />
Operate switch <strong>and</strong> hold.<br />
Switch ignition ON.<br />
Release switch after 5 seconds.<br />
Repeat checking procedure to ensure no data remains in<br />
ECM fault memory.<br />
Method 2<br />
Ensure ignition switched OFF.<br />
Disconnect ECM multi-plug or battery earth lead.<br />
NOTE: ECM adaptive memory may be erased causing erratic<br />
running faults. Carry out road test to allow ECM to<br />
re-learn basic values.<br />
WARNING: Disconnecting the battery may erase memory from<br />
electronic units (e.g. radio, clock).<br />
<strong>Trouble</strong> code identification<br />
type<br />
4-digit<br />
0000<br />
<strong>Fault</strong> location<br />
End of test sequence<br />
1111 ( Engine control module (ECM) I ECM<br />
1231 I Vehicle speed sensor (VSS) ( Wiring, speedometer, VSS<br />
1232<br />
2113<br />
Idle speed control (ISC) actuator<br />
Crankshaft position (CKP) sensor<br />
I Closed throttle position (CTP) switch<br />
Probable cause<br />
-<br />
Wiring, multi-plug incorrectly wired, ISC actuator<br />
Insecure rotor, wiring, CKP sensor<br />
Accelerator cable adjustment, CTP switch<br />
adjustment, wiring, CTP switch<br />
221 2 I Throttle position (TP) sensor I Wiring, poor connection, TP sensor<br />
2234<br />
2312<br />
Engine control module (ECM) - supply voltage<br />
Engine coolant temperature (ECT) sensor<br />
Battery, wiring<br />
2322 I Intake air temperature (IAT) sensor I Wiring, IAT sensor<br />
Wiring, poor connection, ECT sensor<br />
2341 rn 1 Heated oxygen sensor (H02S) - lambda control Heating inoperative, exhaust leak, misfire, fuel<br />
pressurelpump, EVAP canister purge valve<br />
2342<br />
2413 fl<br />
4444<br />
Heated oxygen sensor (H02S)<br />
Mixture control (MC)<br />
No fault found -<br />
Wiring, H02S, heating inoperative, fuel level low<br />
Fuel level low, fuel pressurelpump, intakelexhaust<br />
leak, misfire, HOZS, EVAP canister purge valve,<br />
injector, excessive fuel in engine oil<br />
rn <strong>Trouble</strong> code may be displayed if engine is not idling during self-diagnosis due to missing CKP sensor signal. Ignore trouble code if<br />
engine starts.<br />
After repairs, erase learnt lambda control values: Wait 30 seconds. Disconnect battery or ECM multi-plug for at least 30 seconds.<br />
Carry out road test to allow ECM to re-learn basic values.
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